Given the following notation, which design is illustrated? $$\begin{array} { l l l }
\mathrm { R } & \mathrm { X } _ { 1 } & \mathrm { O } \
\mathrm { R } & \mathrm { X } _ { 2 } & \mathrm { O }
\end{array}$$
A) Pretest-posttest control group design
B) Posttest only control group design
C) Nonequivalent control group design
D) Static group comparison design

Question

Given the following notation, which design is illustrated? $$\begin{array} { l l l } 
\mathrm { R } & \mathrm { X } _ { 1 } & \mathrm { O } \
\mathrm { R } & \mathrm { X } _ { 2 } & \mathrm { O }
\end{array}$$
A) Pretest-posttest control group design
B) Posttest only control group design
C) Nonequivalent control group design
D) Static group comparison design

Quizplus · Accepted Answer

This notation represents a Pretest-posttest control group design. "R" indicates random assignment, "X" represents the treatment or intervention, and "O" represents observation or measurement. The presence of both pretest and posttest measurements for two randomly assigned groups, one receiving the treatment (X1) and the other not receiving the treatment or receiving a different treatment (X2), characterizes the pretest-posttest control group design.

Given the Following Notation, Which Design Is Illustrated RX1ORX2O\begin{array} { l l l } \mathrm { R } & \mathrm { X } _ { 1 } & \mathrm { O } \\\mathrm { R } & \mathrm { X } _ { 2 } & \mathrm { O }\end{array}RR​X1​X2​​OO​

Given the Following Notation, Which Design Is Illustrated $\begin{array} { l l l } \mathrm { R } & \mathrm { X } _ { 1 } & \mathrm { O } \\\mathrm { R } & \mathrm { X } _ { 2 } & \mathrm { O }\end{array}$